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Partners' Capital and Distributions - Distributions to Noncontrolling Interests (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Partners Capital and Distribution [Line Items]        
Distributions paid   $ 1,083 $ 729 $ 863
Noncontrolling Interests        
Partners Capital and Distribution [Line Items]        
Distributions paid   298 14 10
Cash Distribution | Noncontrolling Interests        
Partners Capital and Distribution [Line Items]        
Distributions paid   298 14 10
Cash Distribution | Noncontrolling Interests | Plains Oryx Permian Basin LLC        
Partners Capital and Distribution [Line Items]        
Distributions paid $ 54 273    
Cash Distribution | Noncontrolling Interests | Cactus II Pipeline LLC        
Partners Capital and Distribution [Line Items]        
Distributions paid   4    
Cash Distribution | Noncontrolling Interests | Red River        
Partners Capital and Distribution [Line Items]        
Distributions paid   $ 21 $ 14 $ 10